Chestnut (Castanea) (some species called chinkapin or chinquapin) is a genus of eight or nine species of deciduous trees and shrubs in the beech family Fagaceae, native to temperate regions of the Northern Hemisphere. The name also refers to the edible nuts they produce. Castanea – Flora of China. Castanea – Flora of North America. Castanea – Flora Europaea. Species The Chestnut belongs to the same Fagaceae family as the Oak and Beech. There are four main species, commonly kno… (More on Chestnut)